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  1. Article ; Online: Association between traits related to fruit quality in papaya (Carica papaya L.) hybrids and their implications for selection

    Pereira Miranda, Daniel / Ramos, Helaine Christine Cancela / Santa‐Catarina, Renato / Vettorazzi, Julio Cesar Fiorio / Grasiela Silva Santana, Josefa / Poltronieri, Tathianne Pastana de Sousa / Pirovani, Adriana Azevedo Vimercati / Duarte, Rafaela Pereira / Rodrigues, Alex Souza / Bohry, Dieimes / Santos, Juliana Saltires / Azevedo, Alinne Oliveira Nunes / Pereira, Messias Gonzaga

    Agronomy Journal. 2024 , v. 116, no. 1 p.83-93

    2024  

    Abstract: The knowledge of the associations between the variables and the cause–effect discrimination allows the breeders to make efficient of new cultivars development with traits that meet the demands of producers and consumers. Therefore, the present work aimed ...

    Abstract The knowledge of the associations between the variables and the cause–effect discrimination allows the breeders to make efficient of new cultivars development with traits that meet the demands of producers and consumers. Therefore, the present work aimed to study the associations among the quality variables of papaya (Carica papaya L.) fruits and the effects on selection process. Eight variables related to fruit quality were evaluated in 62 topcross hybrids. The phenotypic and genotypic correlations and path analyses were performed to verify the associations between the variables and the effects on pulp volume. Canonical correlation analysis between primary and secondary quality variables was also carried out. Fruit firmness and soluble solids content showed a positive and significant genotypic correlation, providing evidence for selecting fruits with high averages for both variables. Fruit weight and pulp thickness (PT) were the variables that most contributed to the reduction and increased pulp volume percentage (PV%), respectively. The canonical correlation analysis showed an increase in PT associated with an increase in the fruit length and PV%variables. The physical–chemical variables showed a low association with others, which will make the selection process more laborious to obtain satisfactory gains between the groups of variables.
    Keywords Carica papaya ; agronomy ; cultivars ; fruit quality ; fruit weight ; fruits ; multivariate analysis ; phenotype ; pulp
    Language English
    Dates of publication 2024-01
    Size p. 83-93.
    Publishing place John Wiley & Sons, Ltd
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ZDB-ID 410332-4
    ISSN 1435-0645 ; 0002-1962
    ISSN (online) 1435-0645
    ISSN 0002-1962
    DOI 10.1002/agj2.21493
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 843: Show issues
    Zs Lan AJ: Show issues

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  2. Article: Papaya (Carica papaya L.) S1 family recurrent selection: Opportunities and selection alternatives from the base population

    Santa Catarina, Renato / Fiorio Vettorazzi, Julio Cesar / Marmolejo Cortes, Diego Fernando / Fernandes Moreira, Nádia / Pereira Miranda, Daniel / Pereira, Messias Gonzaga / Vettorazzi, Julio Cesar Fiorio / Cortes, Diego Fernando Marmolejo / Poltronieri, Tathianne Pastana de Sousa / Azevedo, Alinne Oliveira Nunes / Moreira, Nádia Fernandes / Miranda, Daniel Pereira / Moraes, Ramon de / Pirovani, Adriana Azevedo Vimercati / Ramos, Helaine Christine Cancela / Vivas, Marcelo / Viana, Alexandre Pio

    Scientia horticulturae. 2020 Jan. 27, v. 260

    2020  

    Abstract: The existing genetic variability in papaya crop can be explored in segregating populations, through breeding population methods, such as recurrent selection. The paper aims have been to estimate the repeatability coefficients, and select superior ... ...

    Abstract The existing genetic variability in papaya crop can be explored in segregating populations, through breeding population methods, such as recurrent selection. The paper aims have been to estimate the repeatability coefficients, and select superior individuals from the base population of papaya recurrent selection. Sixteen traits were evaluated in 224 individuals, in three harvest seasons. The repeatability coefficients were estimated by REML/Blup method. The repeatability coefficient magnitudes were high (r > 0.60) for eleven traits, showing the genetic control and average traits stability along successive seasons. The gains with direct selection was two to three times higher compared with the combined selection index, and the direct selection is more indicated for short-term selection, aiming at the per se lines development. However, for the purposes of long-term individual’s selection, it is important to simultaneously utilize combined and direct selection, thus ensuring the favorable alleles sources to important traits. The current paper, it is shown that if on one side recurrent selection is a long-term strategy, on the other side the same offers opportunities to already select superior.
    Keywords Carica papaya ; genetic variation ; papayas ; recurrent selection ; selection index
    Language English
    Dates of publication 2020-0127
    Publishing place Elsevier B.V.
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 185557-8
    ISSN 0304-4238
    ISSN 0304-4238
    DOI 10.1016/j.scienta.2019.108848
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 2810: Show issues

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  3. Article ; Online: Genetic Relationships among Tall Coconut Palm (Cocos nucifera L.) Accessions of the International Coconut Genebank for Latin America and the Caribbean (ICG-LAC), Evaluated Using Microsatellite Markers (SSRs).

    Loiola, Carina Mendes / Azevedo, Alinne Oliveira Nunes / Diniz, Leandro E C / Aragão, Wilson Menezes / Azevedo, Carlos Diego de O / Santos, Pedro Henrique A D / Ramos, Helaine Christine C / Pereira, Messias Gonzaga / Ramos, Semíramis R Ramalho

    PloS one

    2016  Volume 11, Issue 3, Page(s) e0151309

    Abstract: The diversity and genetic relationships among two accessions of tall coconut palms collected in Brazil and seven accessions introduced from different geographic regions of the world were analyzed using 25 microsatellite primers, 19 of which were ... ...

    Abstract The diversity and genetic relationships among two accessions of tall coconut palms collected in Brazil and seven accessions introduced from different geographic regions of the world were analyzed using 25 microsatellite primers, 19 of which were polymorphic and detected between 4 and 10 alleles per locus, with an average of 6.57. The observed and expected heterozygosity ranged from 0.25 and 0.40 in the Rennell Islands Tall (RIT) accession to 0.54 and 0.62 in the Polynesian Tall (PYT) accession. The analysis of genetic structure resulted in the formation of five distinct groups. The first group was formed by the accessions Brazilian Tall-Praia do Forte (BRTPF), Brazilian Tall-Merepe (BRTMe) and West African Tall (WAT); the second group consisted of Malaysian Tall (MLT); the third group of RIT; the fourth group of Vanuatu Tall (VTT); and the fifth group of Rotuman Tall (RTMT), Tonga Tall (TONT) and PYT. The dendrogram based on the nearest-neighbor method detected the formation of two main groups and five subgroups, indicating that the genetic relationships of the accessions are based on their geographic regions of origin. The analyses revealed genetic relationships between the accessions collected in Brazil and the accession from Africa, and among palms from South East Asia and the South Pacific, confirming the common origin of these accessions. The information obtained in this study can guide decisions on germplasm conservation activities and the efficient selection of genetically divergent parents for use in coconut breeding programs in Brazil, which are attempting to select for disease resistance, mainly to lethal yellowing, among other characteristics.
    MeSH term(s) Caribbean Region ; Cocos/genetics ; Databases, Nucleic Acid ; Genetic Loci ; Genetic Variation ; Geography ; Latin America ; Microsatellite Repeats/genetics ; Phylogeny
    Language English
    Publishing date 2016-03-14
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0151309
    Database MEDical Literature Analysis and Retrieval System OnLINE

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